Portable Grand DGX-620 Service Manual
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Portable Grand DGX-620 Service Manual

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SERVICE MANUAL
DGX-620
YPG-625
CONTENTS
SPECIFICATIONS .................................................................... 3
PANEL LAYOUT ........................................................................ 4
CIRCUIT BOARD LAYOUT & WIRING ..................................... 6
BLOCK DIAGRAM .................................................................... 8
DISASSEMBLY PROCEDURE ................................................. 9
LSI PIN DESCRIPTION .......................................................... 20
IC BLOCK DIAGRAM .............................................................. 23
CIRCUIT BOARDS ................................................................. 24
TEST PROGRAM ................................................................... 33
INITIALIZATION ...................................................................... 37
USER DATA BACKUP ............................................................. 38
MIDI IMPLEMENTATION CHART ........................................... 42
MIDI DATA FORMAT ............................................................... 43
PARTS LIST
OVERALL CIRCUIT DIAGRAM
PK
001760
HAMAMATSU, JAPAN
'06.03
Copyright (c) Yamaha Corporation. All rights reserved. PDF

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Summary of Contents for Portable Grand DGX-620

  • Page 1 SERVICE MANUAL DGX-620 YPG-625 CONTENTS SPECIFICATIONS ..............3 PANEL LAYOUT ................ 4 CIRCUIT BOARD LAYOUT & WIRING ........6 BLOCK DIAGRAM ..............8 DISASSEMBLY PROCEDURE ..........9 LSI PIN DESCRIPTION ............20 IC BLOCK DIAGRAM .............. 23 CIRCUIT BOARDS ..............24 TEST PROGRAM ..............
  • Page 2 DGX-620/YPG-625 IMPORTANT NOTICE This manual has been provided for the use of authorized Yamaha Retailers and their service personnel. It has been assumed that basic service procedures inherent to the industry, and more specifically Yamaha Products, are already known and understood by the users, and have therefore not been restated.

  • Page 3: Specifications

    Performance assistant technology • SONG, VOICE, STYLE, EASY SONG ARRANGER, • Chord, Chord/Free, Melody, Chord/Melody P.A.T. ON/OFF, LESSON L, LESSON R, LESSON START, METRONOME ON/OFF, PORTABLE GRAND, DEMO, Recording FUNCTION, MUSIC DATABASE, HARMONY ON/OFF, • Song DUAL ON/OFF, SPLIT ON/OFF, TEMPO/TAP, [0]–[9], [+],...

  • Page 4: Panel Layout

    DGX-620/YPG-625 ■ PANEL LAYOUT • Front Panel • Front Panel q [STANDBY/ON] switch !4 [REPEAT & LEARN]/ [ACMP ON/OFF] button w [MASTER VOLUME control !5 [A-B REPEAT]/[INTRO/ENDING/rit.] button !6 [REW]/[MAIN/AUTO FULL] button e FILE CONTROL [MENU], [EXECUTE] button !7 [FF]/[SYNC STOP] button...
  • Page 5 @7 [DEMO] button #8 PHONES/OUTPUT jack @8 [EXIT] button #9 DC IN 12V jack @9 REGIST MEMORY [MEMORY/BANK], [1], [2] buttons #0 [PORTABLE GRAND] button #1 [SPLIT ON/OFF] button #2 [DUAL ON/OFF] button #3 [HARMONY ON/OFF] button #4 [PITCH BEND] wheel...

  • Page 6: Circuit Board Layout & Wiring

    DGX-620/YPG-625 ■ CIRCUIT BOARDS LAYOUT & WIRING • Upper case Keyboard assembly LCD unit < Bottom view > Speaker Speaker DJACK (Tweeter (L)) (Tweeter (R)) • Lower case Speaker Speaker (Woofer (R)) (Woofer (L)) • Keyboard assembly < Top view >...
  • Page 7 DGX-620/YPG-625 Location Part No. Connector Assembly Destination Remarks Flexible flat cable DM-CN201 *4 LCD WG317700 Flexible flat cable DM-CN301 *4 DJACK-CN301 *1 WG317600 Flexible flat cable DM-CN601 *4 PNL-CN01 WG317800 Flexible flat cable DM-CN602 *4 PNR-CN02 WG318100 Flexible flat cable...
  • Page 8 SUSTAIN TO DEVICE TO HOST CONTRAST BACK LIGHT VR301 PITCH BEND DJACK JK301 JK303 JK302 VR401 STANDBY/ON DISPLAY 320 X 240 SW501 CN301(14P) CN501(4P) CN103(3P) CN102(2P) CN101(4P) CN301(14P) CN201(14P) +29V XD0-3 IC102(3P) YD,LP DC/DC 6MHz +21~27V XCSL,WF DATA ENTRY CONTROLLER CONVERTER X301 IC902 (3P)

  • Page 9: Disassembly Procedure

    DGX-620/YPG-625 ■ DISASSEMBLY PROCEDURE Caution: 1) Flat cable’s contacts are visible from the back. Pay attention not to insert and install the cable to the connector inversely. (Fig.1) 2) Be sure to attach the removed filament tape just as it was before removal.
  • Page 10 DGX-620/YPG-625 DM Circuit Board (Time required: About 10 minutes) Remove the lower case assembly. (See procedure 1.) Remove the four (4) screws marked [480A]. The DM circuit board can then be removed. (Fig.4) Speaker Speaker (Tweeter(R)) (Tweeter(L)) DJACK [480G] [480A]...
  • Page 11 DGX-620/YPG-625 ENC Circuit Board Encoder knob (Time required: About 10 minutes) Remove the lower case assembly. (See procedure 1.) Remove the encoder knob from the control panel. (Fig.5) Remove the four (4) screws marked [480H]. The ENC circuit board can then be removed. (Fig.6) (Fig.5)
  • Page 12 DGX-620/YPG-625 LCD Unit Speaker (Woofer) (Time required: About 11 minutes) (Time required: About 10 minutes) 12-1 Remove the lower case assembly. (See procedure 1.) 13-1 Remove the lower case assembly. (See procedure 1.) 12-2 Remove the DM circuit board. (See procedure 2.) 13-2 Remove the four (4) screws marked [40].
  • Page 13 DGX-620/YPG-625 Disassembling the Keyboard Assembly 15-2 When removing white keys numbered as A-1 and B-1 White key assembly and black key assembly 15-1 key and black key, remove two (2) screws marked Remove the four (4) screws marked [270A] fixing the [270B] and then lift the back of the keys and slide the black and white key assembly for one octave (C-B).
  • Page 14 DGX-620/YPG-625 Actuate Rubber 15-4 Remove the actuate rubber. (Fig.12) Remove in this way. Rubber Contact 15-5 Remove the black and white key assembly for two octaves related to the subject rubber contact. The rubber contact can then be removed. (Fig.13, Fig.14)
  • Page 15 DGX-620/YPG-625 GHL88L Circuit Board GHL88M Circuit Board 15-6 15-7 Remove the black and white key assembly (A1-B2). Remove the black and white key assembly (C1-B5). (See procedure 15-1.) (See procedure 15-1.) Remove the six (6) screws marked [260A]. The GHL88L Remove the seven (7) screws marked [260B].
  • Page 16 DGX-620/YPG-625 GHL88H Circuit Board Hammer (White Key), (Black Key) 15-8 15-9 Remove the black and white key assembly (C5-C7). Remove the black and white key assembly for the (See procedure 15-1.) related keys. Remove the five (5) screws marked [260C]. The GHL88H With the key frame placed upside down, push the circuit board can then be removed.
  • Page 17 DGX-620/YPG-625 Assembling the Keyboard Assembly Part Name Range for Applicable Tone Keys Hammer (White Key), (Black Key) 16-1 Hammer, W1 A-1 - F1 After applying grease to the bearing section of the Hammer, W2 G1 - E3 hammer, bring the hammer (white key)(black key)
  • Page 18 DGX-620/YPG-625 GHL88L Circuit Board GHL88H Circuit Board 16-2 16-4 Tighten the six (6) screws marked [260A] to fix the Tighten the five (5) screws marked [260C] to fix the GHL88L circuit boards. (Fig.13) GHL88H circuit board. (Fig.13) GHL88M Circuit Board...
  • Page 19 DGX-620/YPG-625 White key assembly and black key assembly 16-7 16-8 Use the two (2) screws marked [270B] to fix the A-1 to After applying grease to the key guide, install the white B-1 keys. (Fig.10) key assembly/black key assembly. 16-9 Use a screw marked [270C] to fix the C7 key.

  • Page 20: Lsi Pin Description

    DGX-620/YPG-625 ■ LSI PIN DESCRIPTION YMW767-VTZ (X6055A00) CPU ..........20 S1D13700F01A100 (X5422A00) LCD CONTROLLER ... 21 PD789022GB-A15-8E (XZ560100) CPU ........ 21 ISP1161A1BD (X5879A00) USB CONTROLLER ....22 AK4385ET (X6040A00) DAC ..........22 YMW767-VTZ (X6055A00) CPU DM: IC101 NAME FUNCTION NAME...
  • Page 21 DGX-620/YPG-625 S1D13700F01A100 (X5422A00) LCD CONTROLLER DM:IC201 NAME FUNCTION NAME FUNCTION Ground Ground AB12 XCD1 Drain output AB11 XCG1 Gate input AB10 Address bus RESET# Reset SCANEN Test mode set up input TESTEN HIOVDD Power supply CLKI Externally sourced system clock...
  • Page 22 DGX-620/YPG-625 ISP1161A1BD (X5879A00) USB CONTROLLER DM: IC301 NAME FUNCTION NAME FUNCTION DGND Digital ground NDP_SEL Indicates to the HC EOT input DGND Digital ground D_SUSPEND DC 'suspend' state output DATA bus D_WAKEUP DC wake-up input GoodLink LED output D_VBUS DC USB input...

  • Page 23: Ic Block Diagram

    DGX-620/YPG-625 ■ IC BLOCK DIAGRAM SN74LV32APWR (X5647A00) SN74AHCT1G08DCKR (X0158A00) NJM4580E(TE2) (X2331A00) Quad 2 Input OR Dual Operational Amplifier 74V1T08CTR (X7542A00) Single 2-Input Positive-AND Gate DM:IC805 DM: IC402 DM: IC103,104 +DC Voltage Output A Supply Inverting Output B Input A Inverting...

  • Page 24: Circuit Boards

    DGX-620/YPG-625 ■ CIRCUIT BOARDS CONTENTS AM Circuit Board (X7135B0) ......... 26 DJACK Circuit Board (X7135B0) ........26 DM Circuit Board (X7136C0) ........25 ENC Circuit Board (X7135B0) ........29 GHL88H Circuit Board (X6246D0) ........ 32 GHL88L Circuit Board (X6244D0) ......... 30 GHL88M Circuit Board (X6245G0) .......
  • Page 25 DGX-620/YPG-625 DM Circuit Board ● to AM-CN104 to PNR-CN02 to PNL-CN01 to LCD Unit to GHL88M-CN2 to DJACK-CN301 Component Side Pattern Side 2NA-WG25920 1 Note: See parts list for details of circuit board component parts.
  • Page 26 DGX-620/YPG-625 AM Circuit Board ● to Speaker PHONES to Backlight assembly to DM-CN901 (Woofer) to TW(R) to TW(L) /OUTPUT to MVR-CN601 to PB-CN401 to PSW-CN501 DC IN 12V Component Side 0.5 -1.0mm A nonwoven fabric does not overflow To pile it up in the upper side, it is pasted.
  • Page 27 DGX-620/YPG-625 PNL Circuit Board ● ACMP INTRO/ ON/OFF ENDING/rit. STYLE SONG REPEAT & LEARN REPEAT METRONOME TEMPO/ ON/OFF LYRICS SCORE PIANO ACMP P.A.T. ON/OFF MUSIC DATABASE MENU EXECUTE FILE CONTROL NTRO/ MAIN/ SYNC SYNC DING/rit. AUTO FILL STOP START START/...
  • Page 28 DGX-620/YPG-625 PNR Circuit Board ● SPLIT BANK VOICE RESIST PORTABLE EXIT MEMORY GRAND SPLIT ON/OFF CATEGORY CATEG DOWN VOICE STYLE EASY SONG ARRANGER SONG to ENC-CN901 to DM-CN602 SPLIT DUAL HARMONY VOICE VOICE TYPE ABLE SPLIT DUAL HARMONY ON/OFF ON/OFF...
  • Page 29 DGX-620/YPG-625 ENC Circuit Board MVR Circuit Board ● ● Rotary Encoder MASTER VOLUME to PNR-CN3 Component Side Component Side to AM-CN204 PB Circuit Board PSW Circuit Board ● ● STANDBY/ON to AM-CN103 Component Side to AM-CN101 Component Side TW (R) Circuit Board TW (L) Circuit Board ●...
  • Page 30 DGX-620/YPG-625 GHL88L Circuit Board ● Component Side Note: See parts list for details of circuit board component parts. 2NAK8-WF46230...
  • Page 31 DGX-620/YPG-625 GHL88M Circuit Board ● Component Side 2NAK8-WF46240 2 Note: See parts list for details of circuit board component parts.
  • Page 32 DGX-620/YPG-625 GHL88H Circuit Board ● Component Side Note: See parts list for details of circuit board component parts. 2NAK8-WF46250...

  • Page 33: Test Program

    3) Jigs: Foot switch (FC-4 or FC-5), USB cable, USB memory, USB-MIDI driver (*1) PC (Install a USB-MIDI driver (*1) in PC and finish the THROUGH setup.) *1 Obtain the USB-MIDI driver from CD-ROM (X7225A00) for DGX-620/YPG-625 or Yamaha official website. (URL>>http://www.yamahapkclub.com) HOW TO ENTER THE TEST PROGRAM While pressing the C2#, F2 and G2# keys, turn the [STANDBY/ON] switch on.
  • Page 34 DGX-620/YPG-625 TEST No. LCD Display Test Descriptions, Judgment Criteria 002 Rom Chk1 Checks the ROM that is connected to the CPU. (OK:“Rom OK”, NG:“Rom NG”) The test results appear on the LCD. Check that the LCD displays “Rom OK”. 003 Ram Chk1 Checks the RAM that is connected to the CPU.
  • Page 35 DGX-620/YPG-625 TEST No. LCD Display Test Descriptions, Judgment Criteria 031 Pedal1 Chk Connect the foot switch (FC-4 or FC-5) to the [SUSTAIN] jack. Check that the C3 note is output when the [START/STOP] button is pressed while stepping the pedal and the C4 note is output when releasing the pedal. The sound stops when stepping the pedal again.
  • Page 36 DGX-620/YPG-625 Table 1 SW Name Display Note No. DIAL UP Dial Up DIAL DOWN Dial Down FILE MENU File Menu FILE EXCUTE File Excute P.A.T. P. A.T. Music Data Base MusicDataBase FUNCTION Function LYRICS Lyrics SCORE Score Chord Finger Chord Finger...

  • Page 37: Initialization

    DGX-620/YPG-625 ■ INITIALIZATION This function erases all backup data in the instrument's flash memory and restores the initial default settings. The following initialization procedures are provided. Backup Clear To clear data backed up to the internal flash memory-panel user setting, registration memory, user songs, style file-turn the power on by pressing the [STANDBY/ON] switch while holding the highest white key on the keyboard.

  • Page 38: User Data Backup

    DGX-620/YPG-625 ■ USER DATA BACKUP To backup user data to an external device, use a USB flash memory. Refer to the following for the data you can backup using it. * User Songs * Style Files * Registration Memory Data...
  • Page 39 DGX-620/YPG-625 Formatting USB Flash Memory New USB flash memory must be formatted before they can be used by this instrument. Press the [EXECUTE] button again, or the [+] CAUTION button, and the format operation will begin. If you format a USB flash memory that already contains data, all of the data will be erased.
  • Page 40 DGX-620/YPG-625 Saving Data Three types of data are saved to one 'User File' by this operation: user song, style file, and registration memory data. When you save a user song the style file and registration memory are also saved automatically.
  • Page 41 DGX-620/YPG-625 Loading User Files and Style Files User files, style files, and styles residing on a USB flash memory can be loaded into the instrument. If the required style file has already been transferred to the instrument from a computer using the Musicsoft Downloader application, start from step 2, below.

  • Page 42: Midi Implementation Chart

    DGX-620/YPG-625 ■ MIDI IMPLEMENTATION CHART YAMAHA [ Portable Grand ] Date:17-NOV-2005 Model DGX-620 / YPG-625 MIDI Implementation Chart Version:1.0 Transmitted Recognized Remarks Function... Basic Default 1 - 16 1 - 16 Channel Changed Default Mode Messages Altered ************** Note 0 - 127...

  • Page 43: Midi Data Format

    DGX-620/YPG-625 ■ MIDI DATA FORMAT NOTE: <MIDI Master Tuning> F0H, 43H, 1nH, 27H, 30H, 00H, 00H, 1 By default (factory settings) the instrument ordinarily functions mm, ll, cc, F7H as a 16-channel multi-timbral tone generator, and incoming • This message simultaneously changes the tuning value of data does not affect the panel voices or panel settings.

  • Page 44: Table Of Contents

    PARTS LIST CONTENTS OVERALL ASSEMBLY ..........2 STAND ASSEMBLY ........... 5 LOWER CASE ASSEMBLY ........6 KEYBOARD ASSEMBLY .......... 8 FOOT PEDAL ............10 ELECTRICAL PARTS ..........11 Note) DESTINATION ABBREVIATIONS Australian model South African model British model Chinese model Canadian model South-east Asia model German model...

  • Page 45: Overall Assembly

    DGX-620/YPG-625 ■ OVERALL ASSEMBLY Music rest Upper case assembly U130 U120 U140 U120a U130 340b U110 340a Wheel assembly U100 U110 290a LCD unit Lower case assembly See page 6. Stand pipe assembly Screw set...
  • Page 46 DGX-620/YPG-625 PART NO. DESCRIPTION REMARKS 部 品 名 REF NO. QTY RANK OVERALL ASSEMBLY DGX-620/YPG-625 総 組 立 Overall Assembly 総 組 立 DGX-620 (WF83800) Overall Assembly 総 組 立 YPG-625 (WG39450) WF839200 Upper Case Assembly DGX-620 上 ケ ー ス Ａ ｓ ｓ ’ ｙ...
  • Page 47 V8696800 Music Rest 譜 面 板 X7225A00 CD-ROM DGX ENTRY-H Ｃ Ｄ − Ｒ Ｏ Ｍ DGX-620 E,U,C,B,N,O YPG-625 E,U,C,B Foot Pedal IN PLASTIC BAG フ ッ ト ペ ダ ル (VJ07000) V8029200 AC Adapter PA-5D E Ａ Ｃ ア ダ プ タ ー...

  • Page 48: Stand Assembly

    DGX-620/YPG-625 ■ STAND ASSEMBLY 250b 250a 250b 270b 260b 260b 270a 260a 270b 270a PART NO. DESCRIPTION 部 品 名 REMARKS REF NO. QTY RANK STAND ASSEMBLY ス タ ン ド Ａ ｓ ｓ ’ ｙ DGX-620/YPG-625 Stand Assembly ス タ ン ド Ａ ｓ ｓ ’ ｙ...

  • Page 49: Lower Case Assembly

    DGX-620/YPG-625 ■ LOWER CASE ASSEMBLY Keyboard assembly See page 8. Lower case sub assembly...
  • Page 50 DGX-620/YPG-625 PART NO. DESCRIPTION REMARKS 部 品 名 REF NO. QTY RANK LOWER CASE ASSEMBLY DGX-620/YPG-625 下 ケ ー ス Ａ ｓ ｓ ’ ｙ Lower Case Assembly 下 ケ ー ス Ａ ｓ ｓ ’ ｙ (WF83940) WF839500 Lower Case Sub Assembly 下...

  • Page 51: Keyboard Assembly

    DGX-620/YPG-625 ■ KEYBOARD ASSEMBLY Keyboard Assembly GHL88 Circuit 230a Board Assembly 230d 230b 230d 230c...
  • Page 52 DGX-620/YPG-625 PART NO. DESCRIPTION REMARKS 部 品 名 REF NO. QTY RANK KEYBOARD ASSEMBLY DGX-620/YPG-625 Ｇ Ｈ Ｌ 鍵 盤 束 線 付 Ｃ WG707300 Keyboard Assembly GHL-C A88 K6 Ｇ Ｈ Ｌ 鍵 盤 束 線 付 Ｃ Keyboard Assembly GHL A88 K6 Ｇ...

  • Page 53: Foot Pedal

    DGX-620/YPG-625 ■ FOOT PEDAL PART NO. DESCRIPTION 部 品 名 REMARKS REF NO. QTY RANK FOOT PEDAL フ ッ ト ペ ダ ル DGX-620/YPG-625 Foot Pedal IN PLASTIC BAG フ ッ ト ペ ダ ル (VJ07000) AA812880 Upper Pedal Cover ペ...

  • Page 54: Electrical Parts

    DGX-620/YPG-625 ■ ELECTRICAL PARTS PART NO. DESCRIPTION REMARKS 部 品 名 REF NO. QTY RANK ELECTRICAL PARTS DGX-620/YPG-625 電 気 部 品 WG258300 Circuit Board Ａ Ｍ シ ー ト (WG25900)(X7135B0) WG258400 Circuit Board DJACK Ｄ Ｊ Ａ Ｃ Ｋ シ ー ト...
  • Page 55 DGX-620/YPG-625 PART NO. DESCRIPTION REMARKS 部 品 名 REF NO. QTY RANK VC694800 Semiconductive Cera. Cap. C210 0.1000 25V Z TATET 半 導 体 セ ラ コ ン VM902400 C210 Semiconductive Cera.Cap. 0.1000 25V Z FORM. 半 導 体 セ ラ コ ン   天 津...
  • Page 56 DGX-620/YPG-625 PART NO. DESCRIPTION REMARKS 部 品 名 REF NO. QTY RANK VT279200 L304 Coil DX001-20UH TATEJI コ イ ル   ２ ０ Ｕ   天 津 VB835000 Coil L305 FL05RD200AT TATETE コ イ ル   ２ ０ Ｕ VT279200...
  • Page 57 DGX-620/YPG-625 PART NO. DESCRIPTION REMARKS 部 品 名 REF NO. QTY RANK US064100 C404 Ceramic Capacitor-B (chip) 0.0100 50V K RECT. チ ッ プ セ ラ （ Ｂ ） US063270 Ceramic Capacitor-B (chip) C405 2700P 50V K RECT. チ ッ プ セ ラ （ Ｂ ）...
  • Page 58 DGX-620/YPG-625 PART NO. DESCRIPTION REMARKS 部 品 名 REF NO. QTY RANK X3860A00 IC804 MSM51V18165F-60T3K Ｉ Ｃ X4027A00 IC804 MSM51V18165F-50T3K Ｉ Ｃ DRAM 16M X4028A00 IC804 GLT4160L16P-45TC Ｉ Ｃ X5647A00 IC805 SN74LV32APWR Ｉ Ｃ X3679A00 IC901 RH5RZ25CA-T1-F Ｉ Ｃ REGULATOR +2.5V...
  • Page 59 DGX-620/YPG-625 PART NO. DESCRIPTION REMARKS 部 品 名 REF NO. QTY RANK RD356100 R603 Carbon Resistor (chip) 1.0K 63M J RECT. チ ッ プ 抵 抗 RD356100 Carbon Resistor (chip) R604 1.0K 63M J RECT. チ ッ プ 抵 抗...
  • Page 60 DGX-620/YPG-625 PART NO. DESCRIPTION REMARKS 部 品 名 REF NO. QTY RANK V2548200 Carbon Resistor 150.0 1/6J 26TP カ ー ボ ン 抵 抗 V2547300 Carbon Resistor 27.0 1/6J 26TP カ ー ボ ン 抵 抗 V2547100 Carbon Resistor 18.0 1/6J 26TP カ...
  • Page 61 <Page1> I DGX-620/YPG-625 OVERALL CIRCUIT DIAGRAM (AM, DJACK, DM, MVR, PB, PSW, TW) DGX-620/YPG-625 DC/DC RH5RZ25CA-T1-F (X3679A00) CONVERTER REGULATOR +2.5V to GHL88M-CN2 DM:IC901 <Page2 H-4> 1. GND 2. INPUT BACK LIGHT 3. OUTPUT BA33BC0FP (X5889A00) CONTROLLER REGULATOR +3.3V DM: IC902 1.
  • Page 62 <Page2> I DGX-620/YPG-625 OVERALL CIRCUIT DIAGRAM (ENC, GHL88H, GHL88L, GHL88M, PNL, PNR) DGX-620/YPG-625 GHL88L GHL88M (C # 2 (A-1 28CC1-2000006192 28CC1-2000006193 2 to DM-CN701 <Page1 A-2> GHL88H (C # 5 REPEAT& LEARN MENU LESSON L TEMPO/TAP MEMORY 3 P.A.T FUNCTION...

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